<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box {
            color: red;
            text-shadow: 10px 10px 10px blue;
        }

        .box4 {
            margin: 150px;
            text-shadow: 0 0 20px #fefcc9, 10px -10px 30px #feec85, -20px -20px 40px #ffae34, 20px -40px 50px #ec760c, -20px -60px 60px #cd4606, 0 -80px 70px #973716, 10px -90px 80px #451b0e;
            font-family: Verdana, Geneva, sans-serif;
            font-size: 100px;
            font-weight: bold;
            color: white;
        }
    </style>
</head>

<body>
    <div class="box">今天很开心</div>
    <div class="box4">火焰</div>
    <div>- -</div>
    <div>- -</div>
</body>

</html>